text: You Must Be This Tall: Violin Sizes. Violins come in nine sizes. Adultsâgenerally from age 11 and olderâwill use a standard, full-sized violin. For children, there are also 3/4, 1/2, 1/4, 1/8, 1/10, 1/16 and 1/32 violins. The full-sized violin is also referred to as a 4/4 size. There are two ways to measure a young player for a violin. With the studentâs left arm fully extended away from his or her body, measure from the base of the neck to either the wrist or the center of the palm.